Centrifugal creamer.



No. 637,070. Patented Nov. I4, |899.

J. J. BERRIGAN.

CENTBIFUGAL CBEAMER.

(Application led Mar. 7, 1898.) (No M-odel.) 2 Sheets-Sheet l.

Witnesses.

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Inventor.

Attorney;

;Patentad Nov. I4, |899. J. J. BERRIGAN.

CENTRIFUGAL GREAMER.

(Applicmtion led' lu. 7, 1898.)

` 2 Sheats-Sheet 2.

(No Model.)

Inventor.

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TH: Nonms PETERS ce., Fuoram'na. wAsmNGToN, D. c.

UNITED STATES PATENT OFFICE. Y

JOHNJOSEPH BERRIGAILOF STOCKHOLM, SWEDEN, ASSIGNOR TO THE AKTIEBOLAGETSEPARATOR, OF SAME PLACE.

CENTRIFUGAL CREAM ER.

SPECIFICATION forming part of Iietters Patent No. 637,070, datedNovember 14, 1899.

Application filed March '7, 1898. Serial-No. 672,833. (No model.)

To all whom it may concern,.-

Be it known that I, JOHN JOSEPH BEREI- GAN, a citizen of the UnitedStates, residing at Stockholm, Sweden, have invented a new and usefulImprovement in CentrifugalCreamers, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, which form a part of this specification.

This invention relates to improvements in that class of centrifugalcreamersrin which in the liquid-space of the bowl there are plates ofsuch form or so placed as to cross the radial line, so as io thus dividethe liquid in the bowl into lamina or strata. The preferred form of theplate is that of a frustum of a cone, and in the most preferred form,such as shown in United States Letters Patent No. 432,719, dated July22, 1890, there are a series of such disks or plates su perposed andspaced apart. In all cases there is left a space between the peripheryof the bowl and the lower edge of said plate or plates,so that in actionthe skim or blue milk passes down the plate to the space between it andthe periphery7 of the bowl, where it ascends to the blue or skim milkoutlet, the cream moving toward the center. In practice with thesedevices it occurs that the full milk does not always distribute itselfequally from the bottoln to the top of the bowl.

My invention has for its object to cause an equal distribution of thefull milk from the bottom to the top of the bowl in this class ofmachines, and thus increase the eectiveness of the separation. Iaccomplish this by connecting an upright wall to one of the inclinedplates, or a plurality of suchwalls severally toa plurality of inclinedplates, or by having such wall or walls independent of the inclinedplates. In the drawings, these walls are two in number and are shown asdownward extensions, severally, from two of said inclined plates and arein the form of substantially hollow cylindrical or annular walls thatextend in an upright direction-ein other words, walls that are eitherprecisely vertical or have a slight inclination to be vertical, therebeing a space between said vertical or slightly-inclined walls and theperiphery. By such addition when the blue milk passing toward theperiphery of the bowl along the inclined plate or plates reaches theadditional vertical or slightly-inclined annular plate or plates itsdirection is changed. This will somewhat restrain the outflow of theblue milk and create counter-pressure, which on lines of leastresistance will cause the incoming full milk to move higher up in thebowl until the bowl from bottom to top is filled.

I will now describe the preferred embodiment of my invention, which isin connection with division-plates such as shown and described in theUnited States Letters Patent No. 432,719, heretofore spoken of, whereinthe division-plates consist of a series o f superposed disks each in theform of a frustum of. a cone, although, unless specifically so claimed,I do not intend to limit my invention to the precise form andarrangement of division-plates shown therein.

In the drawings, Figure l is a vertical section through the bowl of theseparator. Fig. 2 is a section on the line 2 2, Fig. 1. Fig. 3 is asimilar View of a modified form. Fig. 4 is an enlarged detail, insection, of the disks of Fig. l. Fig. 5 is a similar view of the disksof Fig. 3. Fig. 6 is a similar View of the disks of another modifiedform.

' a is a centrifugal bowl.

b is the central feed-pipe.

c are a series of conical superposed spaced plates.

d are superposed spaced cylindrical plates, which, as shown in Figs. 1and 3, are con` nected to conical plates d, conforming to the plates c.As shown, each of the plates d is .of usize sufficient to bridge aplurality of the plates c and are so placed as to leave a space betweenthem and the periphery of the bowl and between the plate c and plates d.

In operation the full milk passes through passage b into the bowl, andunder the action of centrifugal force the blue milk passes down theplates c until it reaches the plates d. The direction of the flow of theblue milk is then changed, as it is forced to pass downward and radiallyoutward through the narrow annular openings e, one formed between thelower plate d and the bottom of the bowl, lthe other between the upperand lower plates d. By thus restricting the outiiow for the blue milkIOO , c, and the full milk entering will rise higher in the bowl, andthis action will tend to cause the full milk to be equally distributedthrough the bowl.

In Figs. 3 and 5 I have shown the annular plates d. made with theirwalls slightly inclined from the vertical or slightly conical. Insteadof inserting the plates cl, as shown in Figs. 1 and 3, they may beformed as verticalor slightly-conical plate-casings, soldered orotherwise secured to the plates c, as shown in Fig. 6.

As stated before, I do not intend to limit myself to the precise form ofdivision-plates as shown in the drawings or the number thereof; but,

Having now fully described my invention, what I claim, and desire toprotect by Letters Patent, is-

1. In a centrifugal creamer, the combination, with a series ofsuperposed conical division-plates extending toward, and terminatingopposite, but not contacting with, the periphery of the bowl, the outerends of said division-plates terminating in substantially the sameupright plane, of an upright annular wall, interposed between the outerends ofthe division-plates and the periphery of the bowl, formingpassages respectively between said annular wall and the periphery of thebowl, and between said annular wall and the outer ends of saiddivision-plates.

2. In a centrifugal creamer, the combination, with a series ofsuperposed conical division-plates extending toward, and terminatingopposite, but not contacting with, the periphery of the bowl, of aconical divisionplate corresponding to the form and inclination of theirst-named divisi0n-plates,a downward extension therefrom in the form ofan annular wall interposed between the outer ends of saidfirst-namedplates and the periphery of the bowl, forming passages respectivelybetween said annular wall and the peripheryof the bowl, and between saidannular wall and the outer ends of said first-named plates.

3. In a centrifugal creamer, the combination with a series of superposedconical division-plates extending toward and terminating opposite, butnot contacting with, the periphery of the bowl, of a conicaldivisionplate corresponding to the form and inclination of thefirst-named divisionplates,a downward extension therefrom in the form ofan annular wall interposed between the'outer ends of said first-namedplates and the periphery of the bowl and terminating at its lower endabove the bottom of the bowl, forming passages respectively between saidannular wall and the periphery of the howl, and between said annularwall and the outer ends of said Iirst-named plates.

Signed by me at Stockholm, Sweden, this 17th day of February, 1898.

JOHN JOSEPH BERRIGAN.

Vitnesses:

E. D. WINsLow, TH. WAwRINsKY.

